netdev - Re: [Patch net-next 2/2] bonding: remove useless stats_lock

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Message-ID: <CAMArcTVvDfF8rOkrbHd_82NydB9KikD01WYrJGX+Tfv=QS1u6A@mail.gmail.com>
Date:   Thu, 30 Apr 2020 15:59:33 +0900
From:   Taehee Yoo <ap420073@...il.com>
To:     Cong Wang <xiyou.wangcong@...il.com>
Cc:     Netdev <netdev@...r.kernel.org>,
        syzbot <syzbot+aaa6fa4949cc5d9b7b25@...kaller.appspotmail.com>,
        Dmitry Vyukov <dvyukov@...gle.com>
Subject: Re: [Patch net-next 2/2] bonding: remove useless stats_lock_key

On Tue, 28 Apr 2020 at 15:02, Cong Wang <xiyou.wangcong@...il.com> wrote:
>

Hi Cong,
Thank you for this work!

> After commit b3e80d44f5b1
> ("bonding: fix lockdep warning in bond_get_stats()") the dynamic
> key is no longer necessary, as we compute nest level at run-time.
> So, we can just remove it to save some lockdep keys.
>
> Test commands:
>  ip link add bond0 type bond
>  ip link add bond1 type bond
>  ip link set bond0 master bond1
>  ip link set bond0 nomaster
>  ip link set bond1 master bond0
>
> Reported-and-tested-by: syzbot+aaa6fa4949cc5d9b7b25@...kaller.appspotmail.com
> Cc: Taehee Yoo <ap420073@...il.com>
> Cc: Dmitry Vyukov <dvyukov@...gle.com>
> Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>

Acked-by: Taehee Yoo <ap420073@...il.com>